Planoobaph xio



E. W. OVERSTREET.

INTERNAL COMBUSTION ENGINE.

APPLICATION man AUG.21. 1911.

1,310,368. Patented July 15, 1919.

3 SHEETS-SHEET 1- m m PLANHIiHM'H cu WAQIIINIITON. 0. r.

E. W. OVERSTREET.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG.2?. 1517.

1 ,310,368. Patented July 15, 1919.

3 SHEETS-SHEET 2.

EWUVEIEhEEt THE COLUMBIA PLANOGHAPH cu WAlHlNu'roN, D. c,

E. w. OVERS TREET.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED-AUG.27. 1917.

1,310,368. Patented July 15, 1919.

3 SHEETS-*SHEET 3.

Zlwuentm EWUVBIETFEBt 22 k a, aflfornc 3* TH: COLUMBIA PLANoanAPll 20., WASHINGTON n. c.

EMMETT W. OVERSTREET, OF MURRAY, UTAH.

INTERN ALI-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented July 1 5, 1919.

Application filed August 27, 1917. Serial No. 188,402.

To all whom it may concern Be it known that I, EMME'I'I' W. Ovens'mns'r, a citizen of the United States, residing at Murray city, county of Salt Lake, State of Utah, have invented certain new and useful Improvements in Internal-Cornbustion Engines, of which the following is a specification.

The present invention relates to internal combustion engines, and has for an object to provide an improved structure of engine for increasing the ower of the same without materially ad ing to the weight and size of the motor.

The invention further aims at the pr0- vision of an engine or motor of this type which is so constructed as to provide an increased number of working cylinder parts; means for affecting the simultaneous combustion of charges of fuel in the additional cylinder parts with the usual cylinders employed; to provide a novel and relatively simple valve structure of actuating all of the cylinder parts in predetermined timed relation; and to provide a novel arran e ineut of combustion chambers and means or effecting simultaneous sparking in the respectivc chambers.

The above, and various other more or less important objects of this invention will 'be in part apparent, and in part brought out in the following detailed disclosure of the present embodiment of this invention, the same being illustrated in the accompanying drawings. wherein:

Figure 1 is a side elevation, arts being broken away, of an internal com ustion engine constructed according to the present inveution.

Fig. 2 is a vertical transverse section taken through the engine, showing the double cylinder arrangement of the engine and the valve mechanism for controlling the inlet and exhaust therefrom.

Fig. 3 is a detail front elevation of the crank case and the valve operating connections mounted upon the forward end thereof.

Fig. 4 is a sectional view of the connection between the crank shaft and the valve operating shaft.

Referring to these drawings, wherein like parts are designated by similar numerals of reference throughout the several views, 10 designates a crank case of substantially cylindrical form extending lengthwise of the length.

Mounted upon the crank case 10 are a plll rality of lower cylinders 1 1, the latter having a head 15 closing its lower end and adapted to seat upon the neck 11 of the crank case. The upper end of the cylinder 14 is open and receives thereon the lower end of a corresponding upper cylinder 16. The lower end of the cylinder 14 has :1 laterally off-set head 17 immediately above the closure wall 15 While the cylinder 16 has upon its lower end a laterally offset head 18 communicating with the top of the cylinder 14 and arranged immediately beneath a closure wall 19 at the bottom of the cylinder 16. Preferably, the closure wall 19 and the head 18 are cast or otherwise suitably formed with a connecting section 20 ar ranged between the cylinders 14. and 16, and which is provided with a laterally off-set head 21 arranged above the wall 19 and communicating with the lower end of cylinder 16. A detachable laterally off-set head 22 is mounted upon and closes the upper end of the cylinder 16. Each cylinder is thus provided with a laterally ofi' -set head at each end and with a partition or closure wall 1.) between the cylinders to prevent interconr munication between the same.

Water jackets 23 are preferably formed about the cylinders 14 and 16, and in the closure walls 15 and 19, and in the top of the 11 per detachable head 22. Each laterally 0 -set head, is formed with intake and dis charge ports 24 and 25, the latter preferably extending in opposite upward and downward directions from the adjacent head and communicating with intake and exhaust manifolds 26 and 27. There are thus two manifolds for each head. The manifolds on the upper ends of the cylinders are preferably disposed upon one side of the engine, and the manifolds on the lower ends of the cylinders are preferably disposed upon the opposite side of the engine.- The cylinders are arran ed in co-axial pairs, or in tandem, and any cfisired number of pairs of cylinders may be employed, and the lower cylinders may be cast en bloc as shown, or may be arranged in any other suitable form desired. The upper cylinders 16 may also be likewise and correspondingly formed.

In each pair of cylinders 14 and 16 are disposed a pair of pistons 28 and 29, the same being connected in tandem by a common piston rod 30 extendin longitudinally through the cylinders 14' an" 16 and through a strolling box 31 mo nted in the partition wall 1 9to pact tlidiaiston rod' 30 and prevent leakagfe'b gas thereabout. be lower end of 'tthe piston rod 30 passes tirough a second s iifiin g box 3 52 In'ohnt'ed in the lower closure will '15, and is pivotal connected a its lower extremity 'to a. connecitlil g rod 3 3 which is n cunts at its'lo'i'veren'd u on the adjacent drank portion of the shaft lil Each cylinder, 14 and 16 is provided in its opposite ends with sparlt plugs 34'and 35 arranged oppositely to tie adjacent heads 6 each cylinder, a'i 'id 1- diyided high tensibn lead '86 is connected at its ends to the s Jar'k plugs 34 at one de of the engine an a. 'the lower end of each cylin" er ,'whi le'iisecond high tension lead'3 7 isconnected' to the ot fer spark lllgs {55 at the opposite side of the engine a nd at the upper ends of the cylinde'ls 14 and 1'6. "Yith his arrangement c'oi'n bhstion takes net simultaneously "in the upper'en'ds of goth of the cylinders, and 'at a spacedperiod of time iii th'e hower ends of the cylinders. i

"Each port, 2; and 25 is provided with a controlling valve 38' mounted upon a' stem 39 projectingdownwardl from t e adjacent off-set li 'ead hnd'l ield to its seat loy a spring 40 surro u nchhg the stemand adlust a ly engaging against thelowen'sidfeof the head by pressure of an adjusting niit 41 mounted upon the valve stein 3 9. 'I he lower end ofthe valve stem is mounted in a guide 42 in the form of abracket arin projecting from the adjacent side ofthe engine and being vertically apeirtured to receive the valve stem 39 therethrough. The lovver eitremity of lhe valve stem is fo'rlied o receive an anti-friction roller 43. and the valve stems are. arranged in upper and lower longitudinal rows at the opposite sides of the engine. Beneath eachrow of valve stems is a cam shaft 44, thesame being journal'ed"in 's ilitable brackets 45 projecting fro'n'nthe adjacent side of the engine and having thereon a' )lurality ofcains' orlobes 46 arranged at suitable relative 'a' les axially, of he cam sha t 44 and adap ed to engage the rollers 43 for lifting the alves' 38 at'p'redetermined times. i

At preferably the forward end of the engine andat 'o pos ite sides thereoffis arranged ii a r of" vertically extending operating sha t'si 47 provided with bei el gears 48 n'i'esli'ing'with Corresponding bevel gears 49 ss is we e we ha t The lower ends of the operating shails 4T haw bevel gears 50 thereon whi 'h mesh with bevel gears 51 mounted on stub shafts r3 projecting from the forward end of the crank case 10, by means of bracl-zets 53. The

stub shafts 52 are also secured to spur gear wheels 54 which mesh with a driving pinion 55 mounted upon the crank shaft 12 and arranged in the plane of and between the gear wheels 54.

It will be noted from Ifig. 2 particularly that the valve sfte ns'g tl on the side of the engine where the off-set heads are on the 1 m: ends 'of the cylinders, project upwardly 'trom'the heads for the purpose of compactness n st nature and for facilitat ng inodificatibns ein restricted only by the is??? f. We ll ws i 'l (glann: 1. In an internal combustion engine. the

coinhinatibn of a air of cylinders arranged in tandem connected pistons therein, a laterally bff-set h'ela'd on the bvyer end of the lower cylinder, a detachable laterally off-set h ad closing ti e upper endof the upper cylinder, a connecting member arranged hetvveen the cylinders having a partition \vall s ejo arat ving't e same and provided with oil'- Sct heads at opposite sides of the parl itlon al comninnilating respectively with the lower end of the upper cylinder hud the upper end of the lo \,\"er cylinder.

2. linen internal combustion engine. the eombniatibn oi" a pair of cylinders arranged in tandem, connected pistons mounted in the cylinders, a crank shait, a connection between the crank shaft and the pistons. controlling valves at the opposite ends of the cylindersfcam shafts or the controlling valves for ac uating the same. operating shafts connected tothe Cam shafts and having bevel gears n 1011 their lower ends, a stub shaft arranged elow each operating shaft having bevel gear thereon meshing with the gearo'f the adjacent operating shaft, spur gears mounted on the stub shaft, a pinion mounted on the crank shaft between he slpur gears for actuat ng the same, and a clan case supporting s'a'i o'rank and stub shafts.

\ 3. ];n an internal combustion engine, the

combination of a plurality of lower cylinders, a plurality of upper cylinders arranged in tandem relation with the lower cylinders, inlet and exhaust valves connected to the opposite ends of said upper and lower cylinders and arranged in longitudinal rows at the op osite sides of the engine, cam shafts extending longitudinally at the opposite sides of the engine for operating the valves in redetermined timed relation, operating sha ts arranged vertically at each side of the engine and havin connection with the respective cam shafts, a crank shaft, connected pistons in each superposed pair of cylinders having connection with the crank shaft, and connections between the crank shaft and said operating shafts.

4. In an internal combustion engine, the combination of superposed rows of cylinders arranged in tandem, pairs of exhaust and intake manifolds extending laterally across the upper and lower ends and at the opposite S1 es of the cylinders, valves at the 0p posite ends of the cylinders and at opposite sides thereof for controlling the exhaust and intake to the opposite ends of the cylin ders, cam shafts at the opposite sides of the engine between the pairs of manifolds for actuating the valves, a crank case connected to the lower cylinders, a crank shaft in the crank case, connected pistons in the superposed cylinders having connection with the crank shaft, vertical operating shafts at the o posite sides of the engine having connect1on with the respective cam shafts, and connections between the operating shafts and the cam shaft for driving the former.

5. In an internal combustion engine, the combination, of a pair of cylinders arranged in tandem, connected pistons therein, a laterally offset head on the lower end of the lower cylinder, a detachable laterally off-set head closing the upper end of the upper cylinder, a connectin member arranged between said cylinders aving a partition wall separating the same and provided with offset heads at opposite sides of the partition wall communicating respectively with the lower end of the upper cylinder and the upper end of the lower cylinder, the lateral 0 set heads in said upper and lower heads extending on opposite sides of the cylinder, controlling valves in said heads, a crank shaft, and means operated by said crank shaft to operate said valve in the lateral olfset on the same sides of the cylinders in unison and at intervals to the operation of the valve in the off-set on the opposite sides of the cylinders.

6. In an internal combustion engine, the combination, of a pair of cylinders arranged in tandem, connected pistons therein, a laterally off-set head on the lower end of the lower cylinder, a detachable laterally off-set head closing the upper end of the u per cylinder, a connection member arrange be tween said cylinders having a partition wall separating the same and provided with off set heads at opposite sides of the partition wall communicating respectively with the lower end of the upper cylinder and the up per end of the lower cylinder, the off-set of said upper and lower heads extending on opposite sides of the cylinder, controlling valves in said heads, means for simultaneously operating the valve in the off-set portion on the same side of the cylinder, to admit a charge to the upper end of the cylinder, means for operating the valves on the opposite sides of the cylinders to admit a charge to the lower end of the cylinder at a spaced interval of time from the admission of the first charge, and means for simultaneously igniting the charges in the upper end of the cylinder and at a spaced intervalof time, the charges in the lower end of the cylinder.

7 In an internal combustion engine, the combination of a pair of cylinders arranged in tandem, connected pistons therein, a laterally off-set head on the lower end of the lower cylinder, a detachable laterally offset head. closing the upper end of the upper cylinder, a connection member arranged between said cylinders having a partition wall separating the same and provided with offset heads at opposite sides of the partition wall communicating respectively with the lower end of the upper cylinder and the upper end of the lower cylinder, inlet and exhaust ports communicating with each of said off-set heads, inlet control valves carried by said heads, and means for simultaneously operating certain of said valves and means for simultaneously operating at a spaced interval of time the remaining valves.

- EMMETT W. OVERSTREET.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

